wikichanges is a node.js library for getting an edit stream from the 37 major language Wikipedias. The Wikipedia MediaWiki installations are configured to log changes in specific IRC channels. wikichanges joins all these channels, listens for updates, which it then parses, and sends as JavaScript objects to a callback of your choosing. Each change will look something like:

By default wikichanges picks a IRC nick of wikichanges-{hostname} where
hostname is the hostname for the computer that your program is running.
If you would like to control the IRC nick used by your program use the
ircNickname option: